Inertia actuated automatic oiler



Feb. 6, 1951 R, E. W- HARRISON 2,540,391

INERTIA ACTUATED AUTOMATIC OILER Filed Dec. 21, 1949 I NV EN TOR.

AT1-u R N EYB Patented Feb. 6, 1951 IN ERTIA ACTUATED AUTOMATIC OILER Robert Edward William Harrison, Chambersburg, Pa.

Application December 21, 1949, 'Serial No. 134,274

4 Claims. (Cl. 184-26) -This invention relates to inertia or impulse actuated oiling devices of the type positioned on reciprocating or eccentricallyactuating parts of machine tools or other machinery, and in particular a casing providing a lubricating fluid reservoir slidably mounted on a tubular stem forming a piston with valve means therein wherein thefweight of the casing and fluid therein actuates a piston as an element on which the device is mounted travels whereby the piston forces a lubricating iluid to a journal or other part where lubrication is desired.

The purpose of this invention is to utilize the force of inertia or momentum of the moving part of a machine or the like for pumping a uid through a lubricating system or device.

lVarious oiling and greasing devices have been provided with weights and other elements thereinior forcing grease and lubricants into `moving parts of machine tools, and the like but for some uses it has been found desirable to build up considerable pressure for forcing the lubricant through a lubricating system. With this thought in'mind this invention contemplates an inertia actuated pumping device wherein the weight of 35 the casing of a lubricant reservoir in combination with weight of a lubricant therein is utilized to provide the driving force for operating a piston in `a'cylinder by which lubricant from the reservoir is pumped to journals or other moving parts or. into a lubricating system.

The object of this invention is, therefore, to provide means for constructing a lubricant pumping device whereby with the device mounted Aon a reciprocating or eccentrically traveling part of `a machine tool or machine the weight of a lubricant storage chamber in combination with the weight of a lubricant therein is utilized for pumping the lubricant.

Another object of the invention is to provide 80 section I5 having a cylindrical bore I6 and,- as

illustrated in Figure 1, the'b'ore iits snugly over' an inertia actuated lubricant pumping device that operates automatically with the motion of the part of the machine or the like and that may be installed on machines now in use.

A further object of the invention is to provide an inertia actuated automatically operating lubricant pump that is actuated by an element upon which it is mounted which is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a casing providing a lubricant reservoir slidably mounted on'a tubular stem witha piston oarriedfby the reserf` voir extended into a cylindrical peiling in the stern withal check valve in the lowerend oi the stem and with a connection extended from the' may be carried to a* stem whereby lubricant journal' or 'the like.

Other features and advantages of the invention will appear from' the following descriptionl taken in connection with the drawings wherein:

Figure l is a vertical section through vthe lubrieating device.

Figure 2 is a sectional plan taken on line'2-L-2 of Figure 1 on a reduced scale 'illustrating the tubular mounting elements of the device.

Referring now to the drawings wherein like I reference characters denote corresponding parts' the improved inertia actuated lubricating device" of this invention includes a 'casing I0 providing a reservoir, an inner piston ISI, a tubular stem4 I2 providing ra cylinder; a ball check valve i3 and an outlet connection I4. y

The casing l is provided with a tubular inner the stem I2 so that the casing is free to slide upwardly and downwardly von the stem. The

inner part I5 is provided with a closure plate IT that is secured "to 'the'section I5 by bolts vI8 and the outer end of the "casing "I0 is providedv with a" cover plate i9 that is secured to the casing byV bolts or screws 20. The cover plate I9 is provided with an opening 2I and this opening is closed by a plate 22' that is secured in position by a screw 123. The lower end of the casing 'I0 is provided with a drain connection screw 25 is threaded in this opening.

The inner section I5 of the casing Ill is provided with a keyway 26 and a key 27 which isvvv positioned in a notch 28 in the stem I2 extends1 into the keyway to retain the reservoir casingl I0- in position on the stem I2 so that an opening 29" through the inner section I5 ofthe casing regis, ters with an opening 30 in the wall of the stem I2. The key 21 is secured in position by a screw 3I which is threaded into the upper end of the stem I2 and the screw is provided with a head that extends into a notch in the key 21 to hold the key in the slot 28.

' The cover I9 of the casing I0 is also provided with an opening 32 through which a vent tube 33 extends and the vent tube also extends through an opening 34 in the cover I1 and provides communicating means with an opening 35 that extends through the head 36 of the piston I l.

The stem I2 is provided with a cylindrical bore 31 intowhich the opening 3 0 opens and the piston l l |51 is posi a"ned to travel in this bore. The inner f en d lof the pistoni II is provided with a bore 38 `2li and a cap'- 3 in which one end of a spring 39 extends and the opposite end of the spring is positioned in a bore 4I! of the stem I2.

A plug 4| is threaded into the base 42 of the stem I2 and the plug is provided with a bore 43 having a valve seat 44 at the inner end and an opening 45.extends from the valve seat to the cylinder 31 through the opening 40. The ball check valve I3 is resiliently held against the seat 44 by a spring 46 and the spring is held in position by a nut 41 threaded in the outer end of the plug 4I. The plug 4I is provided with a head 48 that is positioned in a recess 49 in the base 42 of the stem I2.

In the design shown the base 42 of the stem is provided with a ange 50 by which the lubricating device may be attached toa moving part 5I of a machine tool, machine or the like, by bolts 52` The plug 4I is provided 4with an outlet opening 53 that communicates with an opening 54 through the base of the stem I2, and a coupling 55 is threaded in the outer end of the opening 54 whereby the outlet connection I4 is secured to the outlet of the device through the base of the stem I2.

With the parts arranged in this manner reciprocating motion of the element 5I throws the casing I0 with the lubricant reservoir therein outwardly as the'elements travel in one direc-v tion, and inwardly as the elements travel in the opposite direction and as the casing moves inwardly the piston II drives oil or other lubricant in the cylinder 31 through the check valve I3 and into the outlet connection I4 through which the lubricant passes to a lubricating system or directly to journals, bearings, or other moving parts.

It will be understood that the inertia actuated lubricant pump may be mounted directly on a connecting rod or other moving part of a machine or`device and the base of the stem I2 may be formed to correspond with the surface to which the device is attached.

'It will be understood that other modifications may be made in the design and arrangement of the parts without departing from the spirit of the invention.

What is claimed is:

1. A lubricating pump comprising a stern having a cylinder therein, a casing Vhaving a lubricant storage chamber thereinv slidably mounted on the stem, a piston carried by the casing and positioned to travel in the cylinder of the stem, and an outlet connection having a checkV valve therein extended from the stem, said casing and stem having registering openings therein for supplying lubricant from the storage chamber to the cylinder in the stem.

49;; check valve positioned in said plug, an outlet con- 2. A lubricating pump comprising a stem having a cylinder therein, a casing having a lubricant storage chamber therein slidably mounted on the stem, a piston carried by the casing and positioned to travel in the cylinder of the stem, an outlet connection having a check valve therein extended from the stem, said casing and stem having registering openings therein for supplying lubricant from the storagev chamber to the cylinder in the stem, and means keying the casing to the stem for retaining the lubricant supplying openings in the casing and stem in registering relation.

3. A lubricating pump comprising a stem having a cylinder therein, a casing having a lubricant storage chamber therein slidably mounted on the stem, a piston carried by the casing and positioned to travel in the cylinder of the stem, an outlet connection having a check valve therein extended from the stem, said casing and stem having registering openings therein for supplying lubricant from the storage chamber to the cylinder in the stem, and a spring in the cylinderior retaining the casing having the lubricant storage chamber therein in an outwardly extended posi- 4. In a lubricating pump for moving parts of machinery and the like, the combination which comprises a stem having a cylinder in the outer end thereof and having means on the opposite 'nection extended from the' stem and communieating with the cylinder m the Stem through' the ball check valve in the plug, and means reslientlyv urging the casing having a storage chamber therein outwardly. ,Y ROBERT EDWARD WILLIAM HARRISON. i.'

REFERENCES CITED ,Y

Spohr 1 Jam-26, 1932 the; 

